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HelpTest Code LAB444 Urine Sodium
Clinical System Name
Urine Sodium
Synonyms
Sodium Urine
Sodium, Random Urine
NA Urine
NA U
LAB444
Sample Requirements
Specimen: Random Urine
Container(s): Sterile Screw-Capped Container, Sterile Screw-Capped Tube, Syringe
Preferred Vol: 1.0 mL
Minimum Vol: 0.25 mL
Processing Instructions
Reject due to: Age of Specimen, Incorrect specimen container
Spin: Y
Aliquot: Y
Storage location: Core Chemistry Refrigerator
Off-site collection: Specimen should be centrifuged within 2 hours of collection. Spin urine and transfer supernatant to plastic tube and refrigerate or freeze.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | RT |
≤ 24 h |
| Urine | 2-8 C |
≤ 7 d |
| Urine | -20 C or -70 C |
≤ 180 d |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
CPT Codes
84300
Methodology
Method: Potentiometric by Vitros 4600
Analytical Volume: 0.02 mL + 0.03 mL dead space
Reference Range
No reference ranges available for random collections. Results
vary with dietary intake.